The most recent one is the tennis player Kaia Kanepi, whose name sounds like "Kye-a Canopy" ("Kye" rhymes with "rye" or "fly") in Estonian, but who became "Key-er K'NEE-pi" ("Key" as in the thing you put in a door). In years gone by, the coverage of the Tour de France would mention Jaan Kirsipuu, with his surname sounding suspiciously like "Curs-ee-poo".
What names from other non-English countries sound either amusing or groanworthy to speakers of the relevant language when they're mispronounced? I'm sure there are several politicians and others from around the world I've always had wrong, for example
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